Adjustable try-square.



J. SCHEEDER.

ADJUSTABLE TRY SQUARE.v

APPLICATION .FILED AuG.25. |915.

1,23%613. Patented .my Io, 1917.

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JOHN SCHEEDER, OF NEW YORK, N. Y.

ADJUSTABLE TRY-SQUARE.

Application filed August 25, 1916.

To all whom t may concern:

Be it known that I, JOHN ScHnEDnR, a citizen of the United States,residing atv New York, in the county and State of New York, haveinvented certain new and useful Improvements in Adjustable Try-Squares,of which the following is a full, clear, and eX- act specification.

This invention relates to try-squares, and has for its obj ect toprovidea square of this kind with means for adjusting the bladelaterally and edgewise with respect to the head for truing up the squarewhen the blade becomes displaced laterally or edgewise out of the properangle with the head.

The invention will be first hereinafter described in connection with theaccompanying drawing, which constitutes part of this speciication, andthen more specifically de fined in the claims at the end of thedescription.

In the accompanying drawing, wherein similar reference characters areused to designate corresponding parts throughout the several views:

Figure 1 is a side elevation of a try-square made substantially inaccordance with this invention.

Fig. 2 is a reverse side elevation of the try-square.

Fig. 3 is a section on the line III-III of Fig. 2.

Fig. 4 is a plan view.

Fig. 5 is a sectional view on the line V-V of Fig. 4, and

Fig. 6 is a sectional view on the line VI-VI of Fig. 2.

In the drawing, 1 designates the blade and 2 the head which are designedto have a predetermined angular relation. One end of the head 2 isbifurcated, as at 3, to receive one end of the blade 1, said blade beingsomewhat thinner than the bifurcation or slot 3. The inner edge of theblade is also spaced from the bottom of the bifurcation 3, as shown at 4in Fig. 4, whereby said blade is capable of adjustment laterally andedgewise in the bifurcation to correct any lateral and edgewisedisplacement of the blade with respect to the head.

The blade is pivotally secured to the head by a screw 5 passed looselythrough an opening 6, in the blade, having rounded edges as clearlyshown in Fig. 3. The edgewise adjustment of the blade in the head iseffected by a pair of threaded pins 7 extending lon- Specification ofLetters Patent.

Patented July 10, 1917.

Serial No. 116,791.

gitudinally through the head and projecting into the bifurcation 3 atopposite sides of the pivot It will be readily understood that byadvancing one of the screw-threaded pins 7 and retracting the other oneof said pins, the blade may be moved edgewise to change its angle withrespect to the head, as suggested by the dotted lines S, Fig. l1.

The lateral adjustment of the blade with respect to the head in order tocorrect any warping of the blade, is effected by opposed sets of screws9 and 10 carried by the opposite forks of the bifurcation 3. As shown inthe drawings, there are four screws in each set, but the number may bevaried if desired. It will readily be seen, especially from Fig. 3, thatby advancing or retracting the screws 9 and correspondingly retractng oradvancing the opposed screws 10, the blade 1 may be moved laterally assuggested by the dotted lines 11, Fig. 3. The rounded edges of theopening 6, as also shown in this figure, prevent the blade from bindingon the pivot screw 5.

It will also be noted that the blade may be reversed to bring either thestraight or beveled edge thereof into use, or the two opposite edges ofthe blade may be made alike either straight or beveled. In addition toserving as a pivot for the blade, the screw 5 also prevents the forks ofthe head fro-m spreading when the set screws 9 and 10 are tightened.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent of the United States is:

1. A square comprising a blade, a head having a bifurcation, means forpivoting the blade in said bifurcation, and means for rocking the bladelaterally on its pivot and clamping said blade at dierent points of saidrocking lateral adjustment.

2. A square, comprising a blade, a head having a bifurcation, means forpivoting the blade in said bifurcation, and opposed adjusting meanscarried by the opposite forks of the bifurcation for moving the bladelaterally with respect to the head.

3. A square, comprising a blade, a head having a bifurcation, a pivotscrew carried by the head, the blade having an opening with roundededges through which the pivot screw is passed, and means for adjustingthe blade laterally in the bifurcation.

4. A square, comprising a head having a bifurcation, a blade pivoted insaid bifurcation, and opposed sets of adjusting screws carried by theopposite forks of the bifurcation for moving the blade laterally in thebifurcation.

5. A square, comprising a head having va bifurcation, a blade pivoted insaid bifurcation, threaded pins carried by the head and engaging theedge of the blade in the bifurcation at opposite sides of the pivot formoving said blade edgewise in the bifurcation, and opposed screwscarried by the opposite forks of the bifurcation for adjusting the bladelaterally in the bifurcation.

6. A square, comprising a head having a bifurcation, a blade having oneend portion arranged in said bifurcation, set screws carried by theopposite forks of the bifurcation for adjusting the blade laterally withrespect to the head, and means to prevent the forks from spreading whenthe set screws are tightened against the blade.

7. A square, comprising a head having a bifurcation, a blade having oneend portion arranged in said bifurcation, set screws carried by theopposite forks of the bifurcation for adjusting the blade laterally withrespect to the head, and a screw passed through the forks and blade forpreventing said forks from spreading when the set screws are tightenedagainst the blade.

In testimony whereof I have signed my nanie to this specification.

JOHN SCHEEDER.

Copies of this patent may be obtained for ve cents each, by addressingthe "Commissioner Vef Patents,

' Washington, D. C.

